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Date: Tue, 27 May 2003 08:12:11 -0700
From: Terry Lambert <tlambert2@mindspring.com>
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To: Bruce Evans <bde@zeta.org.au>
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Subject: Re: gcc/libm floating-point bug?
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Bruce Evans wrote:
> On Tue, 27 May 2003, Doug Rabson wrote:
> > Even for special cases, it is hard to use -msse (or -msse2) with
> > gcc-3.2.x since it doesn't always manage to 16-byte align the stack
> > pointer. This makes it hard to declare local vector float variables
> > safely. All of this appears to be fixed in gcc-3.3-prerelease at least.
> 
> Isn't this "fixed" in gcc-3.any (gcc-3.2 on i386's at least) except
> for signal stacks which are partly the kernel's responsibility?  gcc-3.2
> still pessimizes stack alignment and invites bugs by doing it in
> functions that don't need it and depending on callers doing it.

Pretty sure it's still broke, even in 3.3.

BTW: signal stacks are irrelevent; technically, you are not
allowed to do floating point in signal handlers anyway.  8-).

-- Terry